1 Heb “or a dreamer of dreams” (so , , ). The difference between a prophet (נָבִיא, navi’) and one who foretells by dreams (חֹלֵם אוֹ, ’o kholem) was not so much one of office—for both received revelation by dreams (cf. Num 12:6)—as it was of function or emphasis. The prophet was more a proclaimer and interpreter of revelation whereas the one who foretold by dreams was a receiver of revelation. In later times the role of the one who foretold by dreams was abused and thus denigrated as compared to that of the prophet (cf. Jer 23:28).
2 The expression אוֹת אוֹ מוֹפֵת (’ot ’o mofet) became a formulaic way of speaking of ways of authenticating prophetic messages or other works of God (cf. Deut 28:46; Isa 20:3). The NT equivalent is the Greek term σημεῖον (sēmeion), a sign performed (used frequently in the Gospel of John, cf. 2:11, 18; 20:30–31). They could, however, be counterfeited or (as here) permitted to false prophets by the Lord as a means of testing his people.

In other versions

“If a prophet or a dreamer of dreams arises among you and gives you a sign or a wonder,

If a prophet, or one who foretells by dreams, appears among you and announces to you a sign or wonder,

“If a prophet or someone who has dreams arises among you and proclaims a sign or wonder to you,

“Suppose there are prophets among you or those who dream dreams about the future, and they promise you signs or miracles,

“If a prophet stands up in your midst or a dreamer of dreams and he gives to you a sign or wonder,

If there arise among you a prophet, or a dreamer of dreams, and giveth thee a sign or a wonder,

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